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Ideas for 'Truth-makers', 'Intermediate Logic' and 'The Thought: a Logical Enquiry'

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4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic

13439	Venn Diagrams map three predicates into eight compartments, then look for the conclusion [Bostock]
	Full Idea: Venn Diagrams are a traditional method to test validity of syllogisms. There are three interlocking circles, one for each predicate, thus dividing the universe into eight possible basic elementary quantifications. Is the conclusion in a compartment?
	From: David Bostock (Intermediate Logic [1997], 3.8)